在 prvInitialiseNewTask里面 为什么要使用0xa5来初始化任务栈?
#if( tskSET_NEW_STACKS_TO_KNOWN_VALUE == 1 )
{
/* Fill the stack with a known value to assist debugging. */
(void) memset(pxNewTCB->pxStack, (int) tskSTACK_FILL_BYTE, (size_t) ulStackDepth * sizeof(StackType_t));
}
#endif /* tskSET_NEW_STACKS_TO_KNOWN_VALUE */